US Patent: 718,573
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| Work-holding chuck
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Patentees:
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| George de Laval (exact or similar names) - Cambridge, MA |
| Charles W. Chisholm (exact or similar names) - Somerville, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 02, 1901 |
| Granted: |
Jan. 13, 1903 |
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Carl Matthews
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Description: |
| The assignee, George F. Blake Manufacturing Co., made pumps for steam engines, fire engines, and marine use. |
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